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From: wright@ais.org (Carl Wright)
Newsgroups: comp.dcom.telecom
Subject: Re: What's the Deal With "1-313"?
Message-ID: <15837@accuvax.nwu.edu>
Date: 7 Jan 91 04:42:23 GMT
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X-Telecom-Digest: Volume 11, Issue 12, Message 4 of 11


Re: prefix changes, the BellSouth Open Network Architecture Outlook
newsletter says the following:

"Estimates were that all available NPA codes would be in use by 1995.
However, the economic cruch of the 1980's and the current seven to
nine percent growth in telephone number usage moved that date up. As a
result, Bellcore requires any area code running short of numbers to
convert to Interchangeable Central Office Codes (ICOC).

Under this plan, converted NPAs may use "0" and "1" as the middle
digit of central office codes (the first three numbers of the seven
digit phone number).

This conversion creates 152 new central office codes, just over a
million phone numbers per area code, and extends the life of the
existing area codes."

They went on to say that Georgia converted to ICOC in October 1989,
North Carolina in March 1990, and Alabama should be converted by
January 1991.

Interested parties should also see the article in {Telephony} dated
12/24/90, page 11 titled "North America Faces Number Crunch".  It also
discusses how Mexico is losing its NPAs.